EP 3734795 B1 20220302 - APPARATUS AND METHOD FOR PERFORMING POWER CALIBRATION IN WIRELESS POWER TRANSMISSION SYSTEM
Title (en)
APPARATUS AND METHOD FOR PERFORMING POWER CALIBRATION IN WIRELESS POWER TRANSMISSION SYSTEM
Title (de)
VORRICHTUNG UND VERFAHREN ZUR DURCHFÜHRUNG VON STROMREGELUNG IN EINEM SYSTEM ZUR DRAHTLOSEN STROMÜBERTRAGUNG
Title (fr)
APPAREIL ET PROCÉDÉ PERMETTANT D'EXÉCUTER UN ÉTALONNAGE DE PUISSANCE DANS UN SYSTÈME DE TRANSMISSION DE PUISSANCE SANS FIL
Publication
Application
Priority
- US 201862615445 P 20180110
- KR 2019000251 W 20190108
Abstract (en)
[origin: EP3734795A1] The present invention relates to an apparatus and a method for performing power calibration in a wireless power transmission system. The present specification provides a wireless power transmission apparatus comprising: a power conversion unit configured to transmit, in a power transfer phase, wireless power generated on the basis of magnetic coupling to a wireless power receiving device; and a communication/control unit configured to perform an initial calibration for a power parameter prior to the power transfer phase, receive a first received power packet from the wireless power receiving device indicating the power received by the wireless power receiving device during the power transfer phase, and detect foreign matter by using the received power and a first power loss determined on the basis of the initial calibration. It is possible to adaptively respond to a newly changed wireless charging environment to calibrate transmission power and reception power, and it is possible to detect foreign matter more precisely by detecting a power loss on the basis of the calibrated transmission and reception power.
IPC 8 full level
H02J 50/60 (2016.01); H02J 7/02 (2016.01); H02J 50/80 (2016.01); H04L 1/16 (2006.01)
CPC (source: CN EP US)
H02J 50/10 (2016.02 - CN); H02J 50/12 (2016.02 - US); H02J 50/40 (2016.02 - US); H02J 50/60 (2016.02 - CN EP); H02J 50/80 (2016.02 - EP US); H04B 1/04 (2013.01 - CN); H04W 24/08 (2013.01 - CN)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3734795 A1 20201104; EP 3734795 A4 20210224; EP 3734795 B1 20220302; CN 111712989 A 20200925; CN 111712989 B 20230411; CN 116317212 A 20230623; EP 4007122 A1 20220601; US 11139702 B2 20211005; US 11664688 B2 20230530; US 12021397 B2 20240625; US 2021066973 A1 20210304; US 2022029475 A1 20220127; US 2023253837 A1 20230810; WO 2019139326 A1 20190718
DOCDB simple family (application)
EP 19738512 A 20190108; CN 201980012518 A 20190108; CN 202310302928 A 20190108; EP 22151372 A 20190108; KR 2019000251 W 20190108; US 201916961554 A 20190108; US 202117449884 A 20211004; US 202318302938 A 20230419